Merge tag 'kvmarm-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD

KVM/arm64 updates for Linux 6.8

- LPA2 support, adding 52bit IPA/PA capability for 4kB and 16kB
  base granule sizes. Branch shared with the arm64 tree.

- Large Fine-Grained Trap rework, bringing some sanity to the
  feature, although there is more to come. This comes with
  a prefix branch shared with the arm64 tree.

- Some additional Nested Virtualization groundwork, mostly
  introducing the NV2 VNCR support and retargetting the NV
  support to that version of the architecture.

- A small set of vgic fixes and associated cleanups.

1 files changed, 11 insertions, 0 deletions

diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index 4796104c4471..6cb8cffa98f9 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -669,6 +669,12 @@ int kvm_arch_vcpu_run_pid_change(struct kvm_vcpu *vcpu)
 			return ret;
 	}
 
+	if (vcpu_has_nv(vcpu)) {
+		ret = kvm_init_nv_sysregs(vcpu->kvm);
+		if (ret)
+			return ret;
+	}
+
 	ret = kvm_timer_enable(vcpu);
 	if (ret)
 		return ret;
@@ -1837,6 +1843,7 @@ static int kvm_init_vector_slots(void)
 static void __init cpu_prepare_hyp_mode(int cpu, u32 hyp_va_bits)
 {
 	struct kvm_nvhe_init_params *params = per_cpu_ptr_nvhe_sym(kvm_init_params, cpu);
+	u64 mmfr0 = read_sanitised_ftr_reg(SYS_ID_AA64MMFR0_EL1);
 	unsigned long tcr;
 
 	/*
@@ -1859,6 +1866,10 @@ static void __init cpu_prepare_hyp_mode(int cpu, u32 hyp_va_bits)
 	}
 	tcr &= ~TCR_T0SZ_MASK;
 	tcr |= TCR_T0SZ(hyp_va_bits);
+	tcr &= ~TCR_EL2_PS_MASK;
+	tcr |= FIELD_PREP(TCR_EL2_PS_MASK, kvm_get_parange(mmfr0));
+	if (kvm_lpa2_is_enabled())
+		tcr |= TCR_EL2_DS;
 	params->tcr_el2 = tcr;
 
 	params->pgd_pa = kvm_mmu_get_httbr();